package org.nobody.mallb2c.mallproduct.service.impl;

import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import org.apache.commons.lang.StringUtils;
import org.nobody.common.constant.ProductConstant;
import org.nobody.mallb2c.mallproduct.dao.AttrAttrgroupRelationDao;
import org.nobody.mallb2c.mallproduct.dao.AttrGroupDao;
import org.nobody.mallb2c.mallproduct.dao.CategoryDao;
import org.nobody.mallb2c.mallproduct.entity.AttrAttrgroupRelationEntity;
import org.nobody.mallb2c.mallproduct.entity.AttrGroupEntity;
import org.nobody.mallb2c.mallproduct.entity.CategoryEntity;
import org.nobody.mallb2c.mallproduct.service.CategoryService;
import org.nobody.mallb2c.mallproduct.vo.AttrGroupRelationVo;
import org.nobody.mallb2c.mallproduct.vo.AttrResVo;
import org.nobody.mallb2c.mallproduct.vo.AttrVo;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.nobody.common.utils.PageUtils;
import org.nobody.common.utils.Query;

import org.nobody.mallb2c.mallproduct.dao.AttrDao;
import org.nobody.mallb2c.mallproduct.entity.AttrEntity;
import org.nobody.mallb2c.mallproduct.service.AttrService;
import org.springframework.transaction.annotation.Transactional;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {
  @Autowired
  AttrAttrgroupRelationDao attrAttrgroupRelationDao;

  @Autowired
  AttrGroupDao attrGroupDao;

  @Autowired
  CategoryDao categoryDao;

  @Autowired
  CategoryService categoryService;

  @Override
  public PageUtils queryPage(Map<String, Object> params) {
    IPage<AttrEntity> page = this.page(
      new Query<AttrEntity>().getPage(params),
      new QueryWrapper<AttrEntity>()
    );

    return new PageUtils(page);
  }

  @Transactional
  @Override
  public void saveAttr(AttrVo attr) {
    AttrEntity attrEntity = new AttrEntity();
    BeanUtils.copyProperties(attr, attrEntity);
    //1、 保存基本数据
    this.save(attrEntity);
    //2、 保存关联关系
    if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId() != null) {
      AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
      relationEntity.setAttrGroupId(attr.getAttrGroupId());
      relationEntity.setAttrId(attrEntity.getAttrId());
      attrAttrgroupRelationDao.insert(relationEntity);
    }
  }

  @Override
  public PageUtils queryBaseOrSaleAttrPage(Map<String, Object> params, Long catelogId, String type) {
    QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type", "base".equalsIgnoreCase(type) ? ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() : ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());

    if (catelogId != 0) {
      queryWrapper
        .eq("catelog_id", catelogId);
    }

    String key = (String) params.get("key");
    if (!StringUtils.isEmpty(key)) {
      queryWrapper.and((wrapper) -> {
        wrapper
          .eq("attr_id", key)
          .or()
          .like("attr_name", key);
      });
    }

    IPage<AttrEntity> page = this.page(
      new Query<AttrEntity>().getPage(params),
      queryWrapper
    );

    PageUtils pageUtils = new PageUtils(page);
    List<AttrEntity> records = page.getRecords();
    List<AttrResVo> respVos = records.stream().map(attrEntity -> {
      AttrResVo attrResVo = new AttrResVo();
      BeanUtils.copyProperties(attrEntity, attrResVo);

      //设置分类和分组的名字
      if ("base".equalsIgnoreCase(type)) {
        AttrAttrgroupRelationEntity attrId = attrAttrgroupRelationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
        if (attrId != null && attrId.getAttrGroupId() != null) {
          AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
          attrResVo.setGroupName(attrGroupEntity.getAttrGroupName());
        }
      }

      CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
      if (categoryEntity != null) {
        attrResVo.setCatelogName(categoryEntity.getName());
      }

      return attrResVo;
    }).collect(Collectors.toList());

    pageUtils.setList(respVos);

    return pageUtils;
  }


  /**
   * 根据分组id查找关联的所有基本属性
   *
   * @param attrgroupId
   * @return
   */
  @Override
  public List<AttrEntity> getRelationAttr(Long attrgroupId) {
    List<AttrAttrgroupRelationEntity> entities = attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));
    List<Long> attrIds = entities.stream().map((attr) -> {
      return attr.getAttrId();
    }).collect(Collectors.toList());

    if (attrIds == null || attrIds.size() == 0) {
      return null;
    }

    Collection<AttrEntity> attrEntities = this.listByIds(attrIds);
    return (List<AttrEntity>) attrEntities;
  }

  @Override
  public void deleteRelation(AttrGroupRelationVo[] vos) {
    List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map((item) -> {
      AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
      BeanUtils.copyProperties(item, relationEntity);
      return relationEntity;
    }).collect(Collectors.toList());
    attrAttrgroupRelationDao.deleteBatchRelation(entities);
  }

  /**
   * 获取当前分组没有关联的所有属性
   *
   * @param params
   * @param attrgroupId
   * @return
   */
  @Override
  public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
    //1、当前分组只能关联自己所属分类里面的所有属性
    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
    Long catelogId = attrGroupEntity.getCatelogId();
    //2、当前分组只能关联别的分组没有引用的属性
    //2.1 当前分类下的所有分组
    List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
    List<Long> collect = group.stream().map(item -> item.getAttrGroupId()).collect(Collectors.toList());
    //2.2 这些分组关联的所有属性
    List<AttrAttrgroupRelationEntity> relation = attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
    List<Long> attrIds = relation.stream().map(item -> item.getAttrId()).collect(Collectors.toList());
    //2.3 从当前分类的所有属性中移除这些属性
    QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type", ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
    if (attrIds != null && attrIds.size() > 0) {
      wrapper.notIn("attr_id", attrIds);
    }
    String key = (String) params.get("key");
    if (!StringUtils.isEmpty(key)) {
      wrapper.and(w -> {
        w.eq("attr_id", key).or().like("attr_name", key);
      });
    }
    IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

    PageUtils pageUtils = new PageUtils(page);

    return pageUtils;
  }

  @Override
  public List<Long> selectSearchAttrIds(List<Long> attrIds) {
    return baseMapper.selectSearchAttrIds(attrIds);
  }

  @Cacheable(value = "attr", key = "'getAttrInfo:'+#root.args[0]")
  @Override
  public AttrResVo getAttrInfo(Long attrId) {
    AttrResVo respVo = new AttrResVo();
    AttrEntity attrEntity = this.getById(attrId);
    BeanUtils.copyProperties(attrEntity, respVo);

    if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
      //设置分组信息
      AttrAttrgroupRelationEntity attrgroupRelation = attrAttrgroupRelationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
      if (attrgroupRelation != null) {
        respVo.setAttrGroupId(attrgroupRelation.getAttrGroupId());
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupRelation.getAttrGroupId());
        if (attrGroupEntity != null) {
          respVo.setGroupName(attrGroupEntity.getAttrGroupName());
        }
      }
    }

    //设置分类信息
    Long catelogId = attrEntity.getCatelogId();
    Long[] catelogPath = categoryService.findCatelogPath(catelogId);
    respVo.setCatelogPath(catelogPath);
    CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
    if (categoryEntity != null) {
      respVo.setCatelogName(categoryEntity.getName());
    }

    return respVo;
  }

  @Transactional
  @Override
  public void updateAttr(AttrVo attr) {
    AttrEntity attrEntity = new AttrEntity();
    BeanUtils.copyProperties(attr, attrEntity);

    this.updateById(attrEntity);

    if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
      //修改分组关联
      AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();
      attrAttrgroupRelationEntity.setAttrGroupId(attr.getAttrGroupId());
      attrAttrgroupRelationEntity.setAttrId(attr.getAttrId());

      Integer count = attrAttrgroupRelationDao.selectCount(new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));

      if (count > 0) {
        attrAttrgroupRelationDao.update(attrAttrgroupRelationEntity, new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
      } else {
        attrAttrgroupRelationDao.insert(attrAttrgroupRelationEntity);
      }
    }
  }

}
